The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 50mm F1.2 DG DN Art and the Kamlan 55mm F1.2 for their suitability to various photography scenarios:
Size and Weight Comparison
The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods. Kamlan 55mm F1.2 weighs 700g, 5% (40g) lighter than the Sigma 50mm F1.2 DG DN Art's weight of 740g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Sony E Mount for size comparison purposes.
Standard Lenses in Sony E Mount for Size Comparison
Filter Threads
The Sigma 50mm F1.2 DG DN Art has a filter size of 72mm whereas the Kamlan 55mm F1.2 has a 62mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 72mm filters that we recommend you to consider for the Sigma 50mm F1.2 DG DN Art:
And these are the 62mm filters that we recommend for the Kamlan 55mm F1.2:
Lens Mounts
Both the Sigma 50mm F1.2 DG DN Art and the Kamlan 55mm F1.2 has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX5, Sony A7R VI and Sony A7 V.
Sigma 50mm F1.2 DG DN Art is also available in the Leica L mount.
Focal Range
Both lenses have the same focal range of
50mm and the fastest aperture of
F1.2.